CVE-2026-3432— Sim Studio AI - Unauthenticated OAuth Token Theft
Quick assessment
Affected
SimStudioAI sim
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Sim Studio是Sim Studio开源的一个AI代理工作流构建器。 Sim Studio 0.5.74之前版本存在安全漏洞，该漏洞源于/api/auth/oauth/token端点存在授权检查绕过，可能导致未经验证的攻击者窃取OAuth访问令牌。
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1528 · Steal Application Access Token
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I. Basic Information for CVE-2026-3432
Vulnerability Information
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Vulnerability Title
Sim Studio AI - Unauthenticated OAuth Token Theft
Source: CVE Program / CVE List V5
Vulnerability Description
On SimStudio version below to 0.5.74, the `/api/auth/oauth/token` endpoint contains a code path that bypasses all authorization checks when provided with `credentialAccountUserId` and `providerId` parameters. An unauthenticated attacker can retrieve OAuth access tokens for any user by supplying their user ID and a provider name, effectively stealing credentials to third-party services.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Sim Studio 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sim Studio是Sim Studio开源的一个AI代理工作流构建器。 Sim Studio 0.5.74之前版本存在安全漏洞，该漏洞源于/api/auth/oauth/token端点存在授权检查绕过，可能导致未经验证的攻击者窃取OAuth访问令牌。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| SimStudioAI | sim | 0 ~ 0.5.74 | - |
|
II. Public POCs for CVE-2026-3432
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
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Same weakness: CWE-862
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V. Comments for CVE-2026-3432
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